Profile of SelectSaver.pm

Filename	/Users/ether/perl5/perlbrew/perls/36.0/lib/5.36.0/SelectSaver.pm
Statements	Executed 7 statements in 144µs

Subroutines
Calls	P	F	Exclusive Time	Inclusive Time	Subroutine
1	1	1	32µs	69µs	SelectSaver::::BEGIN@38SelectSaver::BEGIN@38
1	1	1	5µs	23µs	SelectSaver::::BEGIN@39SelectSaver::BEGIN@39
0	0	0	0s	0s	SelectSaver::::DESTROYSelectSaver::DESTROY
0	0	0	0s	0s	SelectSaver::::newSelectSaver::new

Call graph for these subroutines as a Graphviz dot language file.

Line	State ments	Time on line	Calls	Time in subs	Code
1					package SelectSaver;
2
3	1	1µs			our $VERSION = '1.02';
4
5					=head1 NAME
6
7					SelectSaver - save and restore selected file handle
8
9					=head1 SYNOPSIS
10
11					use SelectSaver;
12
13					{
14					my $saver = SelectSaver->new(FILEHANDLE);
15					# FILEHANDLE is selected
16					}
17					# previous handle is selected
18
19					{
20					my $saver = SelectSaver->new;
21					# new handle may be selected, or not
22					}
23					# previous handle is selected
24
25					=head1 DESCRIPTION
26
27					A C<SelectSaver> object contains a reference to the file handle that
28					was selected when it was created. If its C<new> method gets an extra
29					parameter, then that parameter is selected; otherwise, the selected
30					file handle remains unchanged.
31
32					When a C<SelectSaver> is destroyed, it re-selects the file handle
33					that was selected when it was created.
34
35					=cut
36
37	1	8µs			require 5.000;
38	2	28µs	2	106µs	# spent 69µs (32+37) within SelectSaver::BEGIN@38 which was called: # once (32µs+37µs) by IO::File::BEGIN@131 at line 38 use Carp; # spent 69µs making 1 call to SelectSaver::BEGIN@38 # spent 37µs making 1 call to Exporter::import
39	2	104µs	2	41µs	# spent 23µs (5+18) within SelectSaver::BEGIN@39 which was called: # once (5µs+18µs) by IO::File::BEGIN@131 at line 39 use Symbol; # spent 23µs making 1 call to SelectSaver::BEGIN@39 # spent 18µs making 1 call to Exporter::import
40
41					sub new {
42					@_ >= 1 && @_ <= 2 or croak 'usage: SelectSaver->new( [FILEHANDLE] )';
43					my $fh = select;
44					my $self = bless \$fh, $_[0];
45					select qualify($_[1], caller) if @_ > 1;
46					$self;
47					}
48
49					sub DESTROY {
50					my $self = $_[0];
51					select $$self;
52					}
53
54	1	3µs			1;